Improved method of protecting piles



UNITED. STATES PATENT OFFICE.

-IMPROVED METHOD OF PROTECTING PILES.

Specification forming part of Letters Patent No. 55,694, dated June 19,1866. I

To all whom it may concern:

Be it known that I, WILLIAM J. L. MoUL'roN, a citizen of the UnitedStates of America, and of the State of California, and now of the cityand county of San Francisco, State of California, have at said city andcounty discovered a new and useful invention called Moultons PatentPile'Protector, of which the following is a full and exact description.

The pile between high and low water mark is covered with galvanizediron, zinc, or copper, secured by metallic nails. Then the pile betweenmean low-water mark and the bottom, or that portion of the pile in theearth, and from one to two feet into the earth, is incased in a tube ofgalvanized iron, zi no, or copper, leaving a'space between the pile andthe casing of from one to six inches, which is filled and puddled inwith hydraulic cement or concrete, filling all the cavities in the pilecaused by worms or otherwise. In forty-eight hours the concrete becomesset, the pile is strengthened fifty per cent., and shielded by stone andiron, so as to thoroughly protect it against worms 0r decay A for twentyyears.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

The mode of protecting piles by means of metallic covering and cementfilling, as set forth and described.

In testimony whereof I, the said WVILLIAM J. L. MOULTON, hereuntosubscribe my name, in the presence of the witnesses whose names arehereunto subscribed, on the 31st day of July, A. D. 1865, at said cityand county of San Francisco.

WM. J. L. MOULTON.

In presence of DAVID MAHONEY, JAMES GALLAGHER.

